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OID_DOT11_CURRENT_CCA_MODE (Compact 2013)

  • Article

3/26/2014

When queried, this OID requests that the miniport driver return the value of the IEEE 802.11 dot11CurrentCCAMode management information base (MIB) object for the current PHY type on the 802.11 station.

This MIB object specifies the current clear channel assessment (CCA) mode that is being used by the current PHY type. For more information about CCA, refer to Clause 16.3.5.3 of the IEEE 802.11-1999 standard and Clause 18.4.8.4 of the IEEE 802.11b-1999 standard.

The data type for this OID is a ULONG value.

The current CCA mode is explained in the following bitmask:

Bitmask

Definition

DOT11_CCA_MODE_ED_ONLY (0x00000001)

CCA mode using the energy detect (ED) signal. For more information about the ED signal, refer to Clause 16.3.5.1 of the IEEE 802.11-1999 standard.

DOT11_CCA_MODE_CS_ONLY (0x00000002)

CCA mode using the carrier sense (CS) signal. For more information about the CS signal, refer to Clause 16.3.5.2 of the IEEE 802.11-1999 standard.

DOT11_CCA_MODE_ED_and_CS (0x00000004)

Both ED and CS modes.

DOT11_HR_CCA_MODE_CS_WITH_TIMER (0x00000008)

CCA mode using the CS signal with a timer. For more information about this CCA mode, refer to Clause 18.4.8.4 of the IEEE 802.11b-1999 standard.

This mode is valid only for high-rate direct-sequence spread spectrum (HRDSSS) PHYs.

The miniport driver must not set more than one bit when specifying the current CCA mode.

The dot11CurrentCCAMode MIB object is valid only for the following PHY types:

  • Direct-sequence spread spectrum (DSSS) PHY.
  • High-rate DSSS (HRDSSS) PHY.
  • Extended rate PHY (ERP).

If the current PHY type is not set to dot11_phy_type_dsss, dot11_phy_type_hrdsss, or dot11_phy_type_erp, the miniport driver must fail the query request by returning NDIS_STATUS_INVALID_DATA from its MiniportOidRequest function.

If the miniport driver is operating in Extensible Station (ExtSTA) mode, the current PHY type is determined through the ExtSTA msDot11CurrentPhyID MIB object. This MIB object specifies the index of the current PHY type within the 802.11 station’s list of supported PHY types. For more information about msDot11CurrentPhyID, see OID_DOT11_CURRENT_PHY_ID.

Requirements

Header

windot11.h

See Also

Reference

NDIS 5.x Legacy Wireless LAN OIDs
MiniportOidRequest
OID_DOT11_CURRENT_PHY_ID
Native 802.11 MIB OIDs
NDIS 5.x Legacy Reference